Research and Simulation of Flood Forecasting Model in Coastal Plain Area Based on Antecedent Precipitation Index Algorithm

摘要

This paper presents a simulation model for flood warning and sluice dispatch in complex coastal plain water area. We propose an improved "semi-diurnal water production" Antecedent Precipitation Index (API) algorithm for computational modeling and simulation. By analyzing a large number of historical flood data and applying multiple curve fitting method, the quantitative function curve of the rainfall rainfall, runoff, and pre-rainfall index was established. The comparison between simulation data and historical data shows that the experimental results have high reliability, can effectively predict and warn the flood flow, and provide important data reference for the sluice scheduling in the area.